angular velocity - the measure of the angle swept per second - ω, Angular displacement - the angle in radians through which a point has been rotated - θ, Angular acceleration - the rate of change of angular velocity - α, Tangential speed - is linearly proportional to the product of the angular velocity and the distance from the centre - v = rω, Radian - 2π radians in one full revolution, Centripetal acceleration - a = rω2, Centripetal Force - F = mrω2, Force in a rotational system - F = mv2/r,